| Zugriffsnummer | 18337 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Digitally controlled high-performance dc SQUID readout electronics for a 304-channel vector magnetometer [poster] |
| Autor(in); Institution |
Bechstein, Sylke; 7.5, Tieftemperaturthermodynamik und -technologie, PTB-Berlin
Petsche, Frank; 8.2, Biosignale, PTB-Berlin
Scheiner, Marius; 8.2, Biosignale, PTB-Berlin
Drung, Dietmar; 7.5, Tieftemperaturthermodynamik und -technologie, PTB-Berlin
Thiel, Florian; 8.2, Biosignale, PTB-Berlin
Schnabel, Allard; 8.2, Biosignale, PTB-Berlin
Schurig, Thomas; 7.5, Tieftemperaturthermodynamik und -technologie, PTB-Berlin
|
| Quelle/Jahr | Journal of Physics: Conference Series: 43 (2006), 1266 - 1269 |
| ISSN | 1742-6588 |
| DOI | |
| Verlag | Bristol: IOP Publ. |
| Konferenzangaben | 7th European Conference on Applied Superconductivity, Wien, 11-15, September, 2005, Österreich |
| Zusammenfassung | Recently, we have developed a family of dc supreconducting quantum interference device (SQUID) readout electronics for several applications. These electronics comprise a low-noise preamplifier followed by an integrator, and an analog SQUID bias circuit. A highly-compact low-power version with a flux-locked loop bandwidth of 0.3 MHz and a white noise level of 1 nV/ Hz was specially designed for a 304-channel low-Tc dc SQUID vector magnetometer, intended to operate in the new Berlin Magnetically Shielded Room (BMSR-2). In order to minimize the space needed to mount the electronics on top of the dewar and to minimize the power consumption, we have integrated four electronics channels on one 3 cm x 10 cm sized board. Furthermore we embedded the analog components of these four channels into a digitally controlled system including an in-system programmable microcontroller. Four of these integrated boards were combined to one module with a size of 4 cm x 4 cm x 16 cm. 19 of these modules were implemented, resulting in a total power consumption of about 61 W. To initialized the 304 channels and to service the system we have developed software tools running on a laptop computer. By means of these software tools the microcontrollers are fed with all required data such as the working points, the characteristic parameters of the sensors (noise, voltage swing) or the sensor position inside of the vector magnetometer system. In this paper, the developed electronics including the software tools are described, and first results are presented. |
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Zitierung
Bechstein, S., Petsche, F., Scheiner, M., Drung, D., Thiel, F., Schnabel, A., & Schurig, T. (2006). Digitally controlled high-performance dc SQUID readout electronics for a 304-channel vector magnetometer [poster]. Journal of Physics: Conference Series, 43, 1266–1269. https://doi.org/10.1088/1742-6596/43/1/309